A Preliminary Research about the Apply of Improved Huang Zao 4 Inbred Lines and Improved Hybrids in Maize

doi:10.3321/j.issn:1000-7091.1989.01.004

Abstract

Abstract: The GCA effect and GCA stability of Xin Huang 4 and Huang Gai 113 were lower than Huang Zao 4, which suggested Huang Zao 4 in the hybrid applied to production could not be replaced totally by them. The grain yield of the improved hybrid 27-263×Xin Huang 4 was significantly increased by 10.1% over the original hybrid. This improved hybrid could be applied directly to the production. The grain yield of 27-263×Huang Gai 113 and Huang Gai 113×M₀17 were decreased by 0.6% and 2.9% respectively compared with the original hybrids. They must be tested in the wider regions before they can be used as improved hybrids. Due to low yield and low disease resistance the Xin Huang 4 and Huang Gai 113 may be well used as male parents in replacing Huang Zao 4. The GCA stability could be regared as a important parameter to evaluate maize inbred lines and the adaptability of the hybrids contained them.

Key words: Maize, Improved inbred line, Improved hybrid, GCA stability

Wang Yibo, Liu Xuehan, Ren Heping. A Preliminary Research about the Apply of Improved Huang Zao 4 Inbred Lines and Improved Hybrids in Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1989, 4(1): 23-28. doi: 10.3321/j.issn:1000-7091.1989.01.004.

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